Ruby Walsh conjured a late rally out of Back In Focus to deny Aupcharlie as Willie Mullins claimed a one-two in the Topaz Novice Chase at Leopardstown.
The strong-travelling Aupcharlie was going the better on the run to the final fence but he pecked slightly on landing and could not pull far enough clear of his nearest pursuer.
Walsh kept at the Graham Wylie-owned seven-year-old on the long run-in and the 6-4 favourite battled on bravely to get up close home to score by a head. Texas Jack was third.
Mount Benbulben was pulled up after making a bad mistake as the field went out for the final circuit, while Tony McCoy's partner Jenari fell at the following fence and Lyreen Legend came down three out.
Mullins said: "That's a fantastic win. We didn't think for one minute that Ruby would get back up until he did. He needs every inch of three miles and ground even softer that that. He's a real winter horse.
"As much as I'm delighted I'm sorry for Aupcharlie and Andrew Lynch. It was only his second run over fences and he's run a fantastic race.
"Back In Focus has the RSA written all over him. We'll look for a race over three miles for him.
"With Aupcharlie we could look for the Dr P.J Moriarty. We'll keep them apart. There is no point in them taking each other on again. Aupcharlie could be a horse for the Jewson. The way he jumped he could even come back to the minimum trip. They are two horses to look forward to."
Stan James cut Back In Focus to 12-1 from 16s for the RSA, with Aupcharlie 10-1 from 16-1 for the Jewson Novices' Chase.
Spokesman Joseph Burke said: "Back In Focus proved he's all about stamina after he just got up to prevail by a head on the line from stablemate Aupcharlie, who appeared to just run out of steam. Willie Mullins won the Jewson last season with Sir Des Champs."
30 July 2014Road takes Plate riches
Australia preparing to return
King reigns in Sussex duel
Morphine investigation nearing end
Peculiar claims Galway honours
Reel has Vintage rivals in a spin
Peculiar claims Galway honours
King rules in Sussex
Sky flashes home in Gordon
Tough Teak outstays Goodwood rivals
Chepstow called off
Rich pickings for Ivawood
Edison out to light up Galway
Kingman all set for Sussex
Warwick to ditch Flat races
Estimate ready for Goodwood test
Showcase fixture avoids Ascot clash
Sous earmarked for Royal return
Injury woe for Hanagan
Bird ruled out of Nassau
Elleval team turn to Leopardstown
Zalty still in Galway frame
Tag recovering from Ascot exertions
Muthmir team eye Goodwood gold
Van driven out for Goodwood success
Love too much for Toormore
Cotai claims Molecomb glory
Leger hopefuls seek Gordon glory
Sennockian stars at Goodwood
Hannon aims to uphold family honour
He who would be King
29 July 2014Repeat Topaz victory for Vastonea
Eagle set for short break
Vulcanite spearheads Longsdon raid
Hughes launches double Plate bid
Estimate in Goodwood Cup field
Quick picks off Galway rivals
Lion could roar in Champion Stakes
Time out for Carpenter
Beckett considers Gesture gameplan
Pitt ponders Sir Stewards' run
Bird in full flight for Nassau
Beacon leads Hannon trio
Toormore on Goodwood mission
Star duo head Sussex field
28 July 2014PJA hits out at ERA Cosgrave case
Chopin team wait on softer ground
Options open for Approval
Pallasator states case for Ebor
Custom a cut above
Harty doubles up in Galway feature
Munich Mission impossible
Jinx on a high in France
Cox plays it cool with Kodi
Girl given Lowther target
Burke looking to Curragh
Hanagan hails Taghrooda
Toormore drops in class for Lennox
27 July 2014Beacon shines over Molecomb rivals
Miss skips Galway for Goodwood
Tag crowned queen of Ascot
Muthmir delivers in Dash
Metal proves International star
Sheikh pounces for late score
Kingman poised for showdown
Kleo hits top gear for Cumani
Dettori strikes on Osaila
Bear grills Winkfield rivals
Yorkshire Oaks target for Volume